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MONITORING WELL SAMPLING DATA <br />' Protect Name Stockton Maintenance Sta I-ProjectNumber 58475-06-24 <br /> i <br /> Well No MW-8 Date 5110/02 <br /> Well Diameter 4 in Field Personnel JE <br /> Casing Length 7660 feet Screened Casing Length <br /> Well Elevation feet MSL measured from <br />' PURGE CHARACTERISTICS <br /> Water Depth Before Purging 48 79 ft 21n= 1632 Gal/ft 4 in = 6528 Gal/ft <br /> I <br /> Calculated Water Column Volume 18 15 Gal Volumes Purged 3 0 <br />' Start Purging Time 1032 End Purging Time 1046 <br /> Total Time 14 min Flow Gauge to <br /> Total Volume Pumped 55 Gal Avg Flow Rate 3 9 gpm <br /> Water Depth After Purging feet Time <br /> SAIVIPI.WG CHARACTERISTICS <br /> Purging Method Submersible Pump 11 Sampling Method Disposable Bailer <br /> Laboratory Analysis TPHg, TPHd, BTEX, 5 FOCs by EPA Test Method 8260 <br /> TIME TEMPERATURE CONDUCTIVITY' pH Gallons°C {umbos/cm) Purged <br /> 1037 205 651 7 11 18 <br /> 1042 21 2 662 714 36 <br /> 1046 21 2 672 7 16 55 <br /> 1100 Sample <br /> Comments Purge water clear, no odor <br /> 1 <br /> Turbidity= 010 ntu <br />